Single-trigger mechanism for double-barreled guns.



PATENTED OCT. 8, 1907. O. W. BRENIZER. SINGLE TRIGGER MECHANISM FORDOUBLE BARRELED GUNS.

APPLIOATIGN FILED AUG 8, 1903. RENEWED FBB.,16,1905.

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WITNESSES Wm Qw ATTORNEY.

No. 867,697. PATENTED OCT. 8, 1907.. 0. W. BRENIZER. SINGLE TRIGGERMECHANISM FOR DOUBLE BARRELED GUNS.

APPLICATION FILED AUG. 8, 1903. RENEWED FEB. 16, 1905.

4 SHEETS-SHEET z.

L /NVE/VT0/?,' OM07 JP/$121150? ATTORNEY.

PATENTED OUT. 8, 1907.

0. W. BRENIZER. SINGLE TRIGGER MECHANISM FOR DOUBLE BARRELBD GUNS.

APPLICATION FILED AUG. 8, 1903. RENEWED FEB. 16, 1905.

4 SHEETS-SHEET 3.

INVENTOR. -Qmm@[5 51/D WI TNESSES A TTOHNEV.

NORRIS 4 WASHINGTON o. c

PATENTED OCT. 8, 1907.

0. W. BRENIZBR. SINGLE TRIGGER MECHANISM FOR DOUBLE BARRELED GUNS.

APPLICATION FILED AUG. 8, 1903. RENEWED FEB. 16, 1905.

4 SHEETS-SHEET 4.

WITNESSES (p'v acm u.

A TTORNE).

THE MORRIS PETERs c0, WASHINGTON 04 c UNITED STATES PATENT OFFICE.

SINGLE-TRIGGER MECHANISM Application filed August 8,1903, SerialNo.168,'72'7. Renewed February 16, 1905.

To all whom it may concern:

Be it known that I, ORSON W. BRENIZER, a citizen of the United States,residing at the city and county of Philadelphia, State of Pennsylvania,have invented certain new and useful Improvements in Single-TriggerMechanism for Double-Barrel Guns, of which the following is a full,clear, and exact description, reference being had to the accompanyingdrawings, of which- Figure 1 is a side elevation of the lock portion ofa double-barrcl-gun, containing my invention, the lockplate, and partscarried thereby, on the right side having been removed, and the partbeing in position ready to l ire the right barrel (the scar and hammerfor which have been removed). Fig. 2 is a similar elevation lookin g atthe opposite side, the lock-plate on that side and parts carried thereby(the left) being removed. Figs. 3 and 4 are views similar to Figs. 1 and2 respectively, immediately prior to firing the second (left) barrel,the first (right) barrel having been previously fired. Fig. 5. is a fullsection on line xx, Figs. 1 and 2. Fig. 6 is a similar section on lineyy, Figs. 3 and 4. Fig. 7 is a detail of the escapement device(enlarged) being a section on line z-z, Fig. 6. Fig. 8 is a sectionacross the mechanism looking toward the barrels of the gun, and takenapproximately on the irregular line a-a, Fig. 3, the parts being shownin the position seen in that figure (that is the right barrel fired andthe left ready for firing). Figs. 9, 10, 11, and 12, are enlargeddetails of the sear-engaging arms and their supporting parts.

The object of this invention is to provide an improved single triggermechanism for double-barrel guns that shall be simple in constructionand reliable in operation, and possessing certain other advantageshereinafter mentioned.

The leading feature of the invention comprises a pivoted trigger, havingan arm or blade within the lockchamber, a movable or sliding piece orplate, mounted on said blade, two arms carried by said piece, one ofwhich is adapted to engage under one of the usual sears for releasingthe hammer, when said piece is in the forward position, and the otherarm is adapted to engage under the other sear, for the other hammer,when the piece is in the retracted position; together with a springtending to press back said piece, means for retaining the same in theforward position, against the stress of said spring, and means forreleasing said piece, through the movement of the trigger immediatelyafter the firing of the first barrel of the gun, whereby said piece ispermitted to be carried back by the said spring to the retractedposition, in which position said other arm of the piece is adapted toengage the scar on that side when the trigger is operated to fire thesecond barrel.

The invention also comprises certain mechanisms designed to insureaccuracy of operation and avoidance Specification of Letters Patent.

FOR DOUBLE-BARRELED GUNS.

Patented Oct. 8, 1907.

Serial No. 245,876-

of accidental firing of the gun, as hereinafter described, andparticularly pointed out.

Referring to the accompanying drawings,which show only such of the usualparts of a doublebarrel gun as are necessary to an understanding of myinvention, 1 denotes the usual trigger that depends through a slot inthe trigger plate, 2, on the under side of the frame of the gun. Thetrigger, which is pivoted on a pin, 3, of a support, 4, that rises fromthe inner side of the trigger-plate, has a rearwardly extending, and, inthis instance, bifurcated, blade, 5. Mounted on the latter, so as to becapable of sliding to and fro, longitudinally thereon, is a plate, 6,hereinafter termed the slideplate. Secured to the top of thisslide-plate and extending laterally on opposite sides thereof are twoarms, 7 and 8, the first of which, as hereinafter described, is adaptedto engage the under side of the inwardly projecting free end, 9, of theright sear of the gun, when the slide-plate is in one position, and theother arm, 8 is adapted to engage under the like end, 10, of the leftsear, when said plate is in another position.

The sears are pivoted to the sides, 11, of the lockchamber (commonlytermed the lock-plate) in the usual way and are adapted, respectively,to release the hammers, 12, when actuated by the trigger to fire thegun.

On the before-mentioned support, 4, is pivoted a bell-crank lever, 13,to the long arm, 14 of which is connected one end of a rod, 15; thelatter in this instance passing through a slot or bifurcation, 16, ofthe arm, and said rod having a head, 17, on its free end that engagesthe said arm. The other or rear end of the rod is connected to a stud,18, on the side of the slide-plate, 6. This rod also passes through aslot or opening in a post, 19, that rises from the trigger-plate, 2. Acoil-spring, 20, on said rod, between a collar on the latter and theside of post, 19, tends to slide back the plate, 6, on thetrigger-blade. The other or free arm, 21, of said bell-crank lever, 13,is adapted to be engaged by a projection, 22, of the usual rotatablepost, 23, operated by an exterior lever, 24, for breaking and relockingthe barrels; this engagement taking place when said lever is moved tounlock the barrels, as and for the purpose explained further on.

Pivoted on a pin, 25, on the right-hand side of the trigger-blade, 5, isa bar, 26, whose rear free end extends beneath a lug, 27, of thetrigger-plate. A bentspring, 28 secured to the pin, 25, and engaging theunder side of a stud, 29, on bar, 26, tends to rotate the latterupwardly on its pivot. Said bar 26 has on its upper side a notch oroff-set, 30, with which a tooth or projection, 31, on the side of theslide plate, 6, is adapted to engage when the latter is brought into theforward position (against the stress of the spring, 20) and retain saidplate in position as h reinafter del scribed.

The foregoing comprises a description of the parts constituting theleading feature of my invention, other parts or features, not absolutelyessential, although desirable, being hereinafter described.

The mode of operation of the mechanism hereinbe fore described is asfollows, assuming, first, that the parts thereof are in the relativepositions occupied by them when ready to fire the right barrel of thegun, which position they occupy in Figs. 1, 2, and 5:At this time, theslideplate, 6, and adjuncts are in the advanced position, wherein it islocked against the stress of spring, 20, by the tooth, 31 being inengagement with the notch, 30, of the spring-controlled bar, 26, and thetrigger-blade, 5, is in the depressed position through the stress of thespring, 20, which is made to normally tend to rotate the trigger-bladedownwardly, and thus maintain the trigger in the forward or firingposition. At the same time, the arm, 7, of the slide-plate extendsbeneath the end, 9, of the (right) sear, while the other arm, 8, of saidplate is in advance of the other (left) sear, as more clearly seen inFig. 5. If now, the trigger be drawn back, its blade 5, and adjuncts,will be thereby moved upwardly, thus causing the arm, 7, to raise theend, 9, of the sear and so release the springcontrolled hammer, 12, onthat side, to fire the rightbarrel. As the trigger-blade, 5, rises, itcarries with it the spring-pressed bar, 26, until its free end contactswith the under side of the lug, 27, but the trigger-blade, continuingits upward movement, the tooth, 31, of the slide-plate is carried up outof engagement with the notch, 30, of said bar; whereupon the said plateis left free to be pressed back by the stress of the spring, 20, to bearrested by a suitable stop, at a point where the arm, 8, of said plate,will, when the trigger is released, be underneath the end, 10, of theleft sear, as seen in Figs. 3, 4, and 6. By now again pulling thetrigger, the left barrel will be fired. When the lever, 24, is shiftedto unlock the barrels, preparatory to re-charging the same, theprojection, 22, of the post, 23, will be swung from the position of Fig.6, to that of the dotted lines in Fig. 5, thus impinging against thefree arm, 21, of the crank-lever, 13, and so causing the other arm, 14,of the latter to draw forward the rod, 15, and consequently the slideplate, 6, to the position first above described, that is, as shown inFigs. 1, 2, and 5. As said plate advances its tooth, 31, slides upon thebar, 26, until it engages the notch, 30, of the latter, and thus locksthe plate in place.

In order to compel the left or advance arm, 8, to pass under the end,10, of the (left) sear, when the trigger is released after having firedthe right barrel, and the slide-plate is forced back by the spring, 20,I provide a frame, 32, secured to the triggenplate (of which frame thebefore mentioned post 19, is in this instance a part, for convenience)having a notch, 33, on its under'side, with which a pin, 34, on the sideof the slide-plate registers when said plate is in the forward position,and which said pin is adapted to enter, when the plate is raised by theact of drawing back the trigger to fire the first, or right barrel; andwhen the trigger is released, and the pin, 34, is thereby carried belowsaid notch by the spring, 20, operating to depress the trigger blade, 5and plate, 6,it, the pin, will slide along the under side of frame, 32,which side is in a plane that causes the arm, 8, to travel in a planebelow the end, 10, of

the sear, until said pin leaves the frame, 32, when the arm, 8, will bedirectly beneath the sear. A second notch, 35 in said frame is to permitthe pin, 34, to rise when the trigger blade is elevated to fire thesecond or left barrel.

When the slide-plate is forced back by the spring, 20, after firing thefirst, or right barrel, as described, the rebound, or recoil, may causethe finger to involuntarily again press the trigger and so fire theother, or left barrel, before the finger can be removed from the triggerafter firing the first barrel. To obviate such liability, I providemeans for preventing a too quick rearward movement of the slide-plate.This means, which in this instance is an escapement device, is, asfollowsz-The said slideplate, 6, is made with a slot to receive a wormor cylinder, 36, having a cam-groove, 37; which cylinder is mounted on ashaft, 38 that is journaled in suitable bearings of the plate, 6. A studor pin, 39, that is fastened to the trigger-blade, 5, projects into thesaid cam-groove. Loosely mounted on the rear projecting end of theshaft, 38, is a toothed wheel, 40, on the front side of which is pivoteda spring controlled pawl, 41, that is adapted to engage the teeth of aratchet-wheel, 42, fixed upon said shaft 38. In conjunction with theforegoing, is an escapement, consisting of a swinging or pendulum likearm, 43, which is pivoted on and depends from a pin, 44, extending fromthe plate, 6, and two pallets, 45, carried by said arm, adapted toengage the teeth of wheel, 40. When the slide-plate is forced back, thecam-cylinder and its shaft will, obviously, be rotated toward the right,Fig. 8, and the pawl, 41, being in engagement with a tooth of theratchet wheel, 42, the escapement-wheel, 40, will be caused to rotate inthe same direction; but this rotation will be step by step, and soretarded by the escapement, thus retarding the rotation of thecamcylinder, and consequently the rearward movement of the slide-plate.

In the hereinbefore described construction of the arms, 7, 8, of theslide-plate, the right barrel must be fired first, after the firingmechanism has been set by the act of breaking down the barrelspreparatory to charging the same, and then the left barrel (unless it isdesired to use the right barrel only).

In order that either barrel may be used first, or c011- tinuously,instead of having the arms, 7 and 8, fixedly secured to the slide-plate,I make the same rotatable on the latter, whereby they may be shifted soas to be in position to engage, respectively, either one of the searswhen the plate is in the forward or what may be termed the first-firingposition. To this end, I form the said arms as a single bar, 46, andmount the same centrally and rotatably on a pin, 47, that is secured tothe top of the slide-plate, or rather an expansion, 48 thereof. A coilspring, 49, on said pin, bearing against a head, 50 on the end of thelatter and against the top of the bar, 46, tends to press down the bar.The under side of the latter adjacentto the pin, 47 is formed with twoopposite cam-faces, 51, and having notches, 52, 53, at their respectiveends that are adapted to receive laterally projecting pins, 54, on thetop of the expansion, 48, of the slide-plate; which pins, when in saidnotches, lock the bar, 46 against rotation. When, however, it isrequired to shift the said bar, so that the arms, 7, 8, constituted bythe ends extending beyond the plate, 6, may be brought into position tofire the right or the leit barrel as may be desired, the bar is rotatedand its said cam-faces, riding against the pins, 5-1, raise the baragainst the pressure of the spring, 49, until the notches then movingtoward the pins register with the latter and so lock the bar in place.It will of course be understood that the said pins and notches are sorelated as to stop the bar in two predetermined positions, in one ofwhich,shown in full lines in Figs. 5 and 6,-the right barrel will befired first, and in the ()LlICI' -lllCllCEWGd by dotted lines in saidfigures,the left barrel will be fired first.

To provide a convenient means for shifting the bar,

'7 46, that is in effect, 'thearms, 7 and 8, I employ two arms or horns,55, that are secured to a pin, 56, that passes through and is rotatablein the top plate, 57, and has a lever, 58, at its outer end foroperating the same.

The backwardly turn ed free end oi one of said horns isadapted to engagethe forward side of the bar-arm, 7, when the pin, 56 is turned in onedirection, and so shift the bar, 46, from the position shown in fulllines in Fig. 5, to that indicated by the dotted lines; that is, fromthe position for engaging the right sear to that of engaging the leftsear first. By turning the pin in the opposite direction, the otherhorn, impinging against the bar-arm, 8, will return the bar to thefirst-mentioned position.

Although not essential, I usually use a safety device for locking thetrigger mechanism against accidental firing oi either barrel; the sameconsisting of a bar or arm, 59, projecting up from the rear end of theslideplate, 6, and a slidable spring-plate, 60, having two proj ections,61, within the frame, adapted to be brought over the iree end of thebar, 59, and thus prevent the trigger-blade from rising, whether theparts are in position [or firing either barrel.

While I have shown and described one embodiment of my improvement, thesame may be considerably modified without departing from the essentialprinciples of the invention. For example, other means equivalent to thatdescribed for retarding the backward movement of the slide-plate, causedby the action of the spring, 20, or other suitable spring, may besubstituted. Again, it is not essential that the notched bar, 26, formaintaining the slide-plate in the forward position shall be connectedto the trigger-blade, and in lieu of the bar with a separate spring tocontrol the same, other means to this end may be used. Also, other meansthan that shown may be employed for shifting the bar 46 (or arms 7, 8)to either of the two firing positions described. Nor is it essentialthat the spring, 20, acting upon the slide-plate shall also be adaptedto maintain the trigger in position ready for firing, as a separatespring may be employed for that purpose.

Having thus described my invention, 1 claim as new and desire to secureby Letters Patent- 1. In a single trigger mechanism for double-barrelguns, the combination of the right and left sears and hammers, thepivoted trigger having the blade, the slide-plate mounted on the latter,the laterally extending nrms carried by said plate and adapted to engagesaid sears respectively, the rod pivotally connected to said plate, thearm in which said rod is adapted to slide, the spring mounted on saidrod and tending to slide back said plate, means for sliding forward thelatter against the stress of said spring into &

position for one of said arms to register with one of said sears, andmeans released by the movement of said trigger, for locking said platein said position, and a stop for in suring the registry of the other armof said piece with the other sear when said plate is retracted by thestress of said spring, substantially as set forth.

2. In a single trigger mechanism for double-barrel guns, the combinationwith the right and left sears and hammers, of the pivoted trigger havingthe blade, the slide plate mounted on the latter, the arms carried bysaid plate and adapted to engage said sears respectively, the rodpivoted to said plate, the arm in which said rod is adapted to slide.the spring mounted on said rod and tending to slide back said plate,means for unlocking and locking the barrels, and connections betweensaid means and said plate for bringing the latter into position againstthe stress of said spring for one of said arms to register with itscori-esphnding sear, when said means for'locking'and unlocle ing thebarrels is operated to unlock the same, together with means released bythe movement of the trigger for maintaining said slide'plate in saidposition, substantially as set forth.

In a single-trigger mechanism for double-barrel guns, the combinationwith the right and left scars and hammers of the pivoted trigger havingthe blade, the slideplate on the latter, the laterally extending armsmounted on said slide-plate and adapted to engage said searsrespectively, the bellcrank lever, the rod connecting one arm of saidlever and said slide-plate, the spring upon said rod, the rotatable posthaving the part adapted to engage the other arm of said lever, the leverfor actuating said post, whereby said plate is adapted to be broughtinto position for one of said arms mounted thereon to register with ascar, and means released by the movement of the trigger for locking saidplate in said position, substantially as set forth.

4. In a single trigger mechanism for double barrel guns, the combinationof the right and left sears and hammers, the pivoted trigger having theblade, the slide-plate mounted on the latter, the arms carried by saidplate, one of which is adapted to engage one of said scars and the otherthe second sear, the spring tending to slide back said plate, means forsliding the latter forward on said trigger blade against the stress ofsaid spring, means released by the movement of the trigger, for lockingsaid slide-plate in the forward position, means for directing therearward movement of said plate in a plane to cause the second of saidarms to pass beneath the corresponding sear when said plate is releasedby the trigger, and a stop for insuring the registry of thelast-mentioned arm with the latter sear, substantially as set forth.

5. In a single trigger mechanism for double barrel guns, the combinationof the right and left sears and hammers, the pivoted trigger having theblade, the slide'plate mounted on the latter, the arms carried by saidplate, one of which is adapted to engage one of said scars, and thesecond arm the second sear, the spring tending to retract said plate,means for sliding the latter forward against the stress of said spring,means released by the movement of the trigger, for locking said plate inthe forward position, a stop for insuring the registry of the second ofsaid arms with said second sear, together with the escapement deviceconsisting of the rotatable cylinder journaled to said plate having thecam-groove, the fixed pin projecting into said groove, the toothed wheelloosely mounted on the shaft of said cylinder, the pivoted arm havingthe pallets which engage the teeth of said wheel, and the ratchet wheelfixed on said shaft, and the pawl carried by said toothed wheel, allsubstantially as and for the purpose set forth.

6. In a single trigger mechanism for double barrel guns, the combinationof the right and left sears and hammers, of the pivoted trigger havingthe blade, the slide-plate mounted on the latter, the spring tending topress back said plate, means for sliding forward the latter against thestress of said spring, the laterally extending arms carried by saidplate, one of which arms is adapted to register with one of said searswhen the plate is in the forward position, and the other arm to registerwith the other sear when said plate is in the retracted position, meansfor -means for sliding adjusting said arms to cause either one of thesame to register with its corresponding; sear when said plate is in theforward position, and the other arm to register with its correspondingsear when said plate is in the retracted position, means released by themovement of said trig ger, for locking said plate in the forwardposition, and a stop for limiting the retraction of said plate, substantially as set forth.

7. In a single trigger mechanism for double barrel guns, the combinationof the right and left sears and hammers, of the pivoted trigger havingthe blade, the slide-plate mounted on the latter, the spring tending topress back said plate, forward the latter against the stress of saidspring, the laterally extending arms carried by said plate, one of whicharms is adapted to register with one of said sears when said plate is inthe forward position, and the other arm to register with the other searwhen said plate is in the retracted position, the horns to engage thesaid arms respectively, the pivot-pin on which said horns are carried,means, released by the movement of the trigger, for locking said platein the forward position, and a stop plate, substantially as 8. In asingle trigger mechanism for double barrel guns,

the combination of the right and left scars and hammers, of the pivotedtrigger having the blade, the slide-plate mounted on the latter, thespring tending to press back said plate, means for sliding forward thelatter against the stress of said spring, the bar rotatably mounted onand projecting from the sides 01 said plate, and adapted to registerwith said sears respectively, means for rotating said bar whereby eitherprojection thereof may be caused to register with its corresponding searwhen said plate is in the retracted position, and means for locking saidplate in the forward position substantially as set forth.

In testimony whereof, I have hereunto affixed my signature this 4th dayof August, A. D. 1903.

ORSON W. BRENIZER.

Witnesses A. O. WINCHESTER, \VALTER C. PUsnY.

